476 research outputs found
Design and implementation of a radio controlled led lighting system
Technological advances allow us to control LED (Light Emitting Diode) lighting at home, in the office it can even allow us to change the intensity of the light and this is just the beginning of what the future holds for us. In this study an LED internal lighting fixture of our own design will be presented focusing on each step in its design. Firstly, the features, types and history of LEDs will be presented, next the products available in market that are required for the completion of the device. Finally, the design and implementation as well as the radio frequency controlled LED indoor lighting fixture will be shown
Design and Implementation of a radio controlled led lighting system
Technological advances allow us to control LED (Light Emitting Diode) lighting at home, in the office it can even allow us to change the intensity of the light and this is just the beginning of what the future holds for us. In this study an LED internal lighting fixture of our own design will be presented focusing on each step in its design. Firstly, the features, types and history of LEDs will be presented, next the products available in market that are required for the completion of the device. Finally, the design and implementation as well as the radio frequency controlled LED indoor lighting fixture will be shown
Moments of the superdiffusive elephant random walk with general step distribution
We consider the elephant random walk with general step distribution. We
calculate the first four moments of the limiting distribution of the position
rescaled by in the superdiffusive regime where is the
memory parameter. This extends the results obtained by Bercu.Comment: 11 page
Többtengelyű kovácsolás virtuális és fizikai szimulációinak összehasonlítása: Comparison of virtual and physical simulation of multi-axial forging processes
On a Gleeble 3800 thermophysical simulator, multi-axial forging of high-purity copper workpieces was performed. The strain rate during the simulation process was 0.1 s-1. The applied force of the MaxStrain unit and the geometric changes of the workpiece as a function of time were continuously recorded. For a deeper understanding of the multi-axial forging process, a finite element model was created in Qform3D. The force-displacement curves of the physical and finite element simulation were compared.
Kivonat
Gleeble 3800 típusú termofizikai szimulátoron nagy tisztaságú réz próbatestek multi-axiális kovácsolását végeztük 0.1 s-1 alakváltozási sebességgel. A MaxStrain egységen folytatott méréseknél folyamatosan regisztráltuk az alakító erőt és a próbatest geometriai változásait az idő függvényében. A többtengelyű kovácsolási folyamat törvényszerűségeinek megismerése érdekében végeselemes modellt készítettünk Qform3D program segítségével. A QForm3D szoftverben készített végeselemes szimuláció erő-elmozdulás görbéit hasonlítottuk össze a fizikai szimuláció során rögzített adatokkal.
 
Két Triticum aestivum őszi búzafajta zászlós és második levele szövettanának, vízgazdálkodásának és CO2 felvételének vizsgálata
A lengyel, magyar és a szovjet fizikatanítás és fizikatanárképzés helyzete és ennek tükröződése a szakirodalomban
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